Abag has 5 red marbles, 6 blue marbles and 4 black marbles. what is the probability of picking a red marble, replacing it, and then picking another red marble?

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?